Screed



April 17, 1934.

W. SCHOLER AL SCREED Filed OCC. 19, 1932 Patented Apr. 17, 1934 UNITEDSTATES 1,954,841 s'cREED Walter Schuler and Wilmer Kashner, La Fayette,Ind.

Application October 19, 1932, Serial No. 638,568

11 Claims.

Our invention relates to screeds which are used to denne or act as formsfor the edges of wallplastering. More specically, our invention relatesto a screed of a type suitable for use at the lower edge ofwall-plastering where the plaster adjoins an upward extension ofcomposition flooring.

When composition ooring is laid it is isually extended for a shortdistance up the wall at its edges, this upward extension of the flooringcomposition adjoining the lower edge of the plaster on the wall. Asflooring compositions are usually ground and polished after having beenlaid, it is customary to make the upward extension of the flooringsomewhat thicker than the plaster in order to make it possible to grindand polish the flooring composition, both that portion which forms thefloor proper and that portion which extends upwardly along the wall,without injury to the plaster. The screed which we have developed isespecially suitable for use in such a situation at the joint between thewall plastering and the upward extension of the flooring composition.

Prior screeds which have been used for this purpose have been open toseveral objections. For example, the screed should provide two shouldersprojecting to different distances from the wall, and that shoulder`which projects far'- ther is a handicap and hinderance to the plastererwho is using the other shoulder as a boundary defining the edge of theplaster which he is applying. Further, prior screeds of which we areaware and which have provided two shoulders for the plaster and ooringcomposition respectively have usually been of such a character as to bedamaged in the operation of grinding and polishing the floor, whereby anunsightly appearance is produced.

It is the object of our invention to produce a screed of the typeindicated which will not possess the undesirable features of priorscreeds. More speciiically, it is our object to produce a screed whichwill serve as a form for both the lower edge of the plaster and theupper edge of the flooring composition and which at the same time willnot interfere with the ready application of either. A further object ofour invention is to produce a, screed which will define the upper edgeor the flooring composition and which will not be objectionably damagedin the operation of grinding and polishing the floor. Still anotherobject is to produce a screed of simple construction which can bemanufactured at small cost.

In carrying out our invention, we forrn our screed in twonparts. One ofthese parts comprises `a strip, preferably of sheet-metal, adapted to besecured to the wall and formed in crosssection to project from the walland provide, at the level of the junction between the plaster and C3Ailoo'ring composition a re-entrant portion or outwardly opening grooveadapted to receive andretain the other part of the screed, whichcomprises a strip, usually at andalsc preferably of sheetntal. In lise,`the iSt mentioned part of the screed is 4secured to the wall at theproper elevation, and the wall plastering is applied, the projectingouter edge of the screed serving as a boundary locating and dening theouter edge of the plastering. `After the plaster has been ZO frpplied,`the second screed-part is insertedvinto the groove' formed in the firstscreed-part. This 'second screed-part is of awidth such as to projectoutwardly beyond the outer surface of the plaster to define the outersurface of the flooring Z5 composition which `is later applied.

The accompanying drawing illustrates our invention Fig. 1 is a verticalsection through a joint between auroug'h floor and a rough wall showingour screed, the plaster, and the flooring so composition in place; Fig.2 is a perspective view of our screed with the two parts separated; andFigs. 3 and 4 are cross-sections of modied forms ofscr'eeds.

A The drawing,- as previously indicated, illustrates the junctionbetween a rough floor l0 and a rough Wall 11 which may be formed of anydesired materials. kThe wall is to be covered with a coating of plaster12 the lower edge of which terminates ,somewhatpabove the upper surfaceof the rough OOr 10. The flooring composition 13, which will cover therough floor, is to extend up'- wardly along the wall to a point adjacentthe lower edge of the plaster 12, as is clear from the drawing. l y

p Our screed, which is employed to define the` junction between theplaster 12 and the upward extension of the flooring 13, comprises twoparts 15 and 16, bothA conveniently formed of sheetmetal strips. Thestrip 15, prior to its application to' the wall, is bent alonglongitudinal `lines into a `cross-sec'tior'i which may be roughlydescribed as of a generally W-'shape to provide two outwardly spacedflanges 1'7 and 18, each of double' thickness, spaced apart to define are-'entrant portion or outwardly opening groove 19 which extends forthe' full length of the strip.

The screed-part lois a strip of a width such that when seated in thegroove 19 it will project outwardly beyond the outer edges of theflanges 110 17 and 18, as is clear from Fig. 1. Preferably, the iianges17 and 18 are so spaced that they will frictionally grip the strip 16and firmly hold it in place.

For a purpose which will appear later, the upper iiange 17 preferablyextends outwardly for a slight distance beyond the lower flange 18, butthis is not essential. The extreme edge portions of the strip 15 arebent to extend away from and co-planar with each other and may beperforated at longitudinal intervals for the reception of the nails 2lshown in Fig. 1. Those portions of the strip 15 which will` lie incontact with the plaster and flooring composition may be provided withperiorations 22 for the purpose of securing a better bond.

In use, the strip 15, formed as above described, is secured to the roughwall 1l with the groove 19 at the levei of the junction between theplaster and flooring composition which are to be applied. Then, with thestrip 16 not in place, the rough wall 11 above the screed is coveredVwith plaster 12. 1n the plastering operation, the upper flange 17 of thestrip 15 serves as a form for the lower edge of the plaster, and theouter edge of the flange 17 denes or locates the outer surface of theplaster. The flange 17, projecting outwardly beyond the lower ilange 18,serves to prevent particles of plaster from becoming wedged into theopening of the groove 19.

After the plaster has been applied, the strip 16 is inserted and seatedin the grooove 19v and is frictionally held in place between the-iianges17 and 18. The strip, as previously stated, is of a width such that whenseated against the bottom of the groove 19 its outer edge will properlylocate the outer surface of the flooring composition which is next to beapplied. The iicoring composition isthen applied and extended up thewall to meet the lower surfaces of the strips 15 and 16 and, after ithas dried, is ground and polished.

Because the outer surface of the flooring composition extending upwardlyalong the wall 11 is spaced outwardly from the surface of the plaster12, the plaster 12 need not be damaged during the grinding and polishingoperation. As the metal dening the upper edge of the flooringcomposition is of single thickness, it is not objectionably damaged bythe grinding operation, as a strip presenting an outer folded edge wouldbe. In order to prevent the creation of an unsightly appearance whichmight result from rusting or corrosion, the strip 16 is preferably ofnon-ferrous metal, and desirably is of brass since brass strips arefrequently used to divide Vthe flooring composition into sections.

It is to be noted that the strip 16 is not in place during theplastering operation. As a result, no part o1" the screed is projectingoutwardly beyond the surface of the plaster, and the plasterers trowelis therefore free to pass without hinderance over the outer edge of theange 17 which defines the proper plaster-thicknesss.

In the modification illustrated in Fig. 3, that portion of the screedwhich is secured to the rough wall is composed of two opposed strips 30of generally L-shaped cross-section. A spacing strip 31 is placedbetween the two horizontal legs of the strips 30, and the three stripsare secured together as by spot-welding. Obviously, the spacer 31 is oisuch a thickness to provide for the insertion of the screed-part 16between the horizontal legs of the members 31, the spacer serving las anabutment to position the part 16.

Fig. 4 shows a further modification in which the screed-part secured tothe wall comprises a single L-shaped member 35 to the horizontal leg ofwhich a supplementary strip 36 is secured as by welding. As shown, theinner edge of the supplementary strip is secured to the lower face ofthe horizontal iiange of the member 35 and the body of the supplementarystrip is offset downwardly to provide the outwardly opening groove forthe reception of the screed-part 16.

We claim as our invention:

, 1. A screed, comprising a part adapted to be secured to a wall and toextend outwardly therefrom, said part being provided with an outwardlyopening longitudinally extending groove, and a second part in the formof a strip adapted to be received in said groove and when receivedtherein to project outwardly beyond the limits of the first namedscreed-part to form a shoulder constituting a forni for the edge of awall covering applied in plastic state.

'2. A screed, comprising a part adapted to be secured to a wall and toextend outwardly therefrom, said part being provided with an outwardlyopening longitudinally extending groove, and a second part in the formof a strip adapted to be received in said groove to form a shoulderconstituting a form for the edge of a wall covering applied in plasticstate.

3. A screed, comprising a part adapted to be secured to a wall and toproject outwardly therefrom, said part being provided with twolongitudinally extending vertically spaced anges, the upper flangeextending outwardly beyond the lower, and a second screed-part in theform of a strip adapted to be received between the two flanges of thei'st screed-part and when in place to extend outwardly beyond the outerlimits of both said Iianges.

4. A screed, comprising a part adapted to be secured to a wall and toproject outwardly therefrom, said part being provided with twolongitudinally extending vertically spaced flanges, the upper ilangeextending outwardly beyond the lower, and a second screed-part in theform of a strip adapted to be received between the two iianges of theiirst screed-part.

5. A screed, comprising two separable parts, one part being formed ofsheet-metal bent'along longitudinal lines into a generally W-shapedcross-section to provide edge portions adapted to be secured to a walland outwardly projecting vertically spaced anges of double thickness,the second screed-part being a strip of sheet-metal adapted to bereceived between the anges of the first screed-part and to projectoutwardly therebeyond to form a shoulder constituting a form for theedge of a wall covering applied in plastic state.

6. A screed, comprising two separable parts, one part being adapted tobe secured to a wall and formed to provide an outwardly extendingflange, the second screed-part, when in position, being supported fromsaid first screed-part, and projecting outwardly beyond the ilange ofthe rst screed-part to form a shoulder constituting a form for the edgeof a wall covering applied in plastic state. Y

7. In a wall-covering of the type applied in a .plastic state, twoadjoining wall-covering sections of different thicknesses, a screedlocated between such sections, said screed comprising a part secured tothe wall and extending outwardly therefrom to a distance substantiallyequal to the thickness of the thinner section of wallcovering to definethe edge thereof, said part being pro- Vided with an outwardly openinglongitudinally extending groove, and a second part in the form of astrip received in said groove and projecting outwardly to terminatesubstantially flush with the surface of the thicker section of saidwallcovering.

8. In a wall-covering of the type applied in a plastic state, a screed,said screed comprising a part secured to the wall adjacent one edge ofsaid wall-covering and extending outwardly from the wall, said partbeing provided with an outwardly opening longitudinally extendinggroove, and a second part in the forin of a strip received in saidgroove and extending outwardly to terminate substantially ilush with thesurface of said wall-covering.

9. In a wall-covering of the type applied in a plastic state, twoadjoining wall-covering sections of different thicknesses, a screedlocated between such sections, said screed comprising two separableparts, one part being formed of sheet-metal bent along longitudinallines into a generally W- shaped cross-section to provide edge portionssecured to the wall and vertically spaced flanges of double thicknesswhich project outwardly from the wall to terminate substantially flushwith the thinner of said two wall-covering sections, the secondscreed-part being a strip of sheet-metal received between the flanges ofthe first screedpart and projecting outwardly therebeyond to terminatesubstantially flush with the thicker of said wall-covering sections.

1D. In a wall-covering of the type applied in a plastic state, twoadjoining wall-covering sections of different thicknesses, a Ascreedlocated between such sections, said screed comprising two separableparts, one part being secured to the wall and formed to provide anoutwardly eX- tending flange terminating substantially flush with thethinner of said two wall-covering sections, means for supporting thesecond screedpart from said first screed-part in a position such that itwill project outwardly beyond the flange of the first screed-part toterminate substantially flush with the thicker of said two wall-coveringsections.

11. In a wall-covering of the type applied in a plastic state, twoadjoining wall-covering sections of different thicknesses, a screedlocated between such sections, said screed comprising two separableparts, one part being secured to the wall and formed to provide anoutwardly extending liange terminating substantially llush with thethinner of said two Wall-covering sections, means for supporting thesecond screedpart in a position such that it will project outwardlybeyond the flange of the rst screed-part to terminate substantially ushwith the thicker of said two wall-covering sections.

WALTER SCHOLER. WILMER C. KASHNER.

